Below is the complete tank assembly. The device with the spigot on one end is the spacer used to hold the spiral at the bottom of the tank when the lid has been fitted - see below.
Inserting film needs a little practice. First of all, it's essential that the two flanges are dry. It helps to cut a little bit of film off the corners at the ends in order to produce a slight taper. Factory Minox film has rounded ends which has a similar effect. The film is carefully introduced into the spiral and slid around it. It will bind from time to time, but this can usually be overcome by gently tapping the spiral or even squeezing the flanges a little. With patience, the whole film will be introduced quite easily. I've had no problems at all with scratches even though one might think this could happen rather easily.
Once inside the tank, the spiral needs only 90ml of solution for complete coverage. To hold the spiral at the bottom of the tank (necessary as I use inversion agitation) I constructed a spacer from a cut down plastic 35mm film cassette container with a centrally placed peg to locate into the centre of the spiral - this was made out of a piece of plastic knitting needle. It might be thought of as a little 'Heath-Robinson' but it works, and at the end of the day, that's all that matters.... Obviously other developing tanks might be treated in a similar way with a little ingenuity.
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